Job Summary: We are seeking a Senior Fullstack Engineer with solid experience in Node.js and Angular, capable of building scalable products and robust APIs with a focus on modern architecture. Key Highlights: 1. Full-stack role with a strong backend component and required autonomy 2. We value experience with AI solutions applied to business (LLMs, RAG) 3. Collaborative teamwork with tangible impact and systemic thinking **Disclaimer – Mandatory Reading: Commitment and Dedication** ------------------------------------------------------------- This role requires full-time dedication, with clear priority given to Darwoft’s projects during established working hours. It is not compatible with other full-time professional commitments. Any additional professional activity must be disclosed in advance and must not interfere with the responsibilities or working hours of this role. **____** ------------ **About Darwoft** ----------------- At Darwoft, we develop software solutions that deliver real impact. We are a custom software development and IT staff augmentation company, with presence in the United States, Argentina, and Colombia. We partner with international clients to design and build high-quality digital solutions, fostering long-term relationships grounded in trust, technical excellence, and a people-first mindset. Our growth is driven by solid execution, meaningful connections, and a deep understanding of our clients’ business challenges. **About the Role** ---------------- We are looking for a **Senior Fullstack Engineer** with solid experience in **Node.js and Angular**, capable of building scalable products and robust APIs, with emphasis on modern architecture and sound development practices. The role has a strong backend component but requires full-stack autonomy. Additionally, we value experience working with **AI solutions applied to business**, including integration with LLMs and RAG architectures. The ideal candidate combines systemic thinking, product orientation, and the ability to generate tangible impact from day one. **Responsibilities** --------------------- * Design, develop, and maintain full-stack applications using **Node.js (NestJS, Express, or Fastify)** and **Angular with TypeScript** * Build and maintain **robust and scalable APIs** * Design efficient data models using **PostgreSQL and Redis** * Participate in **event-driven** architectures (SQS, SNS, EventBridge, Kafka preferred) * Work with cloud services on **AWS**, ensuring security, scalability, and adherence to best practices * Design and integrate **generative AI solutions** into digital products * Implement integrations with **LLMs**, embeddings, and **RAG (Retrieval-Augmented Generation)** architectures * Apply techniques of **prompt engineering, model evaluation, and guardrails** * Ensure business impact through sound technical decisions * Participate in code reviews and promote quality standards **Requirements** -------------- * 4+ years of professional experience developing with **Node.js (NestJS, Express, or Fastify)** * 4+ years of experience working with **Angular and TypeScript** * Experience building **scalable products and robust APIs** * Data model design with **PostgreSQL and Redis** * Experience working with **AWS** (at least one of the following): + Lambda or ECS + API Gateway + S3 + CloudFront + RDS + Secrets Manager / KMS * Experience integrating **AI solutions** into real-world products: + Integration with LLMs + Embeddings / RAG + Prompt engineering + Model evaluation and guardrails * Experience in Agile environments (Scrum / Kanban) ### **Nice-to-Have** * Experience with **event-driven** architectures (SQS, SNS, EventBridge, Kafka) * Advanced knowledge of cloud security * Experience in performance optimization and observability * Involvement in SaaS products or high-traffic platforms ### **What We Offer** * **Full-time employment contract** with payment in **ARS** * **100% remote work** * **Competitive salaries** * Statutory leave + **5 additional personal days per year** * Access to **learning platforms** (Udemy, among others) * **Benefits card and discounts** * **Welcome kit** * **Reimbursement programs** (internet and utilities) * **English classes** * **Referral program** * **Birthday gift** * **Healthy Break**